Bug 89402

Summary: RenderLayerBacking sometimes doesn't attach scrollbars to graphics layer tree
Product: WebKit Reporter: Adrienne Walker <enne>
Component: New BugsAssignee: Adrienne Walker <enne>
Status: RESOLVED FIXED    
Severity: Normal CC: enne, eric, jamesr, jchaffraix, simon.fraser, webkit.review.bot
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch none

Description Adrienne Walker 2012-06-18 16:43:48 PDT
RenderLayerBacking sometimes doesn't attach scrollbars to graphics layer tree
Comment 1 Adrienne Walker 2012-06-18 17:32:38 PDT
Created attachment 148208 [details]
Patch
Comment 2 Adrienne Walker 2012-06-18 17:34:23 PDT
In some cases, a scrollbar graphics layer gets created in RenderLayerBacking but it doesn't get attached to the graphics layer tree.  This causes the scrollbar to disappear.

See: http://code.google.com/p/chromium/issues/detail?id=129186 for a test case, or the test included in the first patch above.
Comment 3 Simon Fraser (smfr) 2012-06-18 17:51:58 PDT
I don't think it updates scrollbar geometry properly either.
Comment 4 Adrienne Walker 2012-06-18 17:55:30 PDT
(In reply to comment #3)
> I don't think it updates scrollbar geometry properly either.

I'm not sure I see what you're pointing out.  Which code are you referring to?
Comment 5 Simon Fraser (smfr) 2012-06-18 18:06:00 PDT
Never mind, thinking of another bug that I can't currently find.
Comment 6 WebKit Review Bot 2012-06-18 20:05:08 PDT
Comment on attachment 148208 [details]
Patch

Clearing flags on attachment: 148208

Committed r120661: <http://trac.webkit.org/changeset/120661>
Comment 7 WebKit Review Bot 2012-06-18 20:05:14 PDT
All reviewed patches have been landed.  Closing bug.